CN217081412U - Oil seal and steering axle suitable for paddy field working condition - Google Patents
Oil seal and steering axle suitable for paddy field working condition Download PDFInfo
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- CN217081412U CN217081412U CN202220545917.XU CN202220545917U CN217081412U CN 217081412 U CN217081412 U CN 217081412U CN 202220545917 U CN202220545917 U CN 202220545917U CN 217081412 U CN217081412 U CN 217081412U
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Abstract
The utility model relates to an oil blanket and steering axle suitable for paddy field operating mode relates to the sealing part field, and the last knuckle sealing ring of first sealing washer is used for the hole interference fit with last knuckle, and the one end of lower knuckle sealing ring has the lower knuckle seal lip with lower knuckle seal fit; the rotating shaft sealing ring of the second sealing ring is used for being in interference fit with the rotating shaft, the middle sealing ring is located at the other end of the lower steering knuckle sealing ring, and one end of the middle sealing ring is provided with a middle sealing lip in sealing fit with the lower steering knuckle sealing ring. The steering axle comprises the oil seal. The utility model has the advantages that: the multi-channel sealing lips can block impurities outside the oil seal or isolate the impurities among the multi-channel sealing lips of the oil seal, so that the impurities are prevented from entering the inner part of the upper steering knuckle. The service life of the paddy field bridge oil seal is prolonged, the frequency of a series of faults caused by oil leakage of the oil seal of the paddy field bridge is reduced, the quality of the paddy field bridge is improved, and the market service cost is reduced.
Description
Technical Field
The utility model relates to a sealing part field, concretely relates to oil blanket and steering axle suitable for paddy field operating mode.
Background
A steering axle (hereinafter referred to as a paddy field axle) of a working machine in a paddy field has a severe working environment, is soaked in muddy water for a long time, and has a high requirement on the sealing performance between connecting pieces. Oil seal sealing is mostly adopted between steering structures of the paddy field axle. Paddy field bridge oil blanket simple structure in the existing market, inside silt easily direct entering oil blanket, oil blanket operational environment is abominable, easy damage. The oil blanket is the spare part that the fault rate is the highest among the paddy field bridge, and damages the back and change the dress and consume time longer, can't satisfy paddy field bridge user demand.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is how to realize the sealed of paddy field bridge.
The utility model provides an above-mentioned technical problem's technical scheme as follows: an oil seal adapted for use in paddy field conditions, comprising:
the first sealing ring is provided with an upper steering knuckle sealing ring and a lower steering knuckle sealing ring which are fixedly connected, the upper steering knuckle sealing ring is used for being in interference fit with an inner hole of an upper steering knuckle, and one end of the lower steering knuckle sealing ring is provided with at least one lower steering knuckle sealing lip which is in sealing fit with a lower steering knuckle;
the second sealing washer, the second sealing washer has fixed connection's pivot sealing ring and middle sealing ring, the pivot sealing ring be used for with pivot interference fit, middle sealing ring is located the other end of knuckle sealing ring down, just the one end of middle sealing ring have at least one with knuckle sealing ring seals the middle seal lip of complex down.
The utility model has the advantages that: the upper steering knuckle and the lower steering knuckle are partially or completely soaked in a liquid environment, impurities are filled in the liquid, and the impurities are prevented from entering the inner parts of the upper steering knuckle and the lower steering knuckle through the oil seal. Go up the knuckle sealing ring and prevent that impurity from getting into between knuckle sealing ring and the last knuckle, the pivot sealing ring prevents that impurity from getting into between pivot sealing ring and the pivot. Inside the knuckle should get into, impurity need pass through knuckle seal lip and middle seal lip down in proper order, from this, the multichannel seal lip can stop impurity outside the oil blanket, perhaps completely cuts off between the multichannel seal lip of oil blanket, avoids impurity to get into inside the knuckle. Prolonged paddy field bridge oil blanket life, reduced the frequency of a series of troubles that the paddy field bridge brought because of the oil blanket oil leak, if: oil seal leakage, steering knuckle shell abrasion and the like, improve the quality of the paddy field bridge and reduce the market service cost.
On the basis of the technical scheme, the utility model discloses can also do following improvement.
Further, the inner side of the other end of the lower knuckle sealing ring is provided with a first axial extension portion extending towards the middle sealing ring, the inner side of one end of the middle sealing ring is provided with a second axial extension portion extending towards the lower knuckle sealing ring, and the first axial extension portion is sleeved on the outer side of the second axial extension portion.
The beneficial effect of adopting the further scheme is that: the complexity of the internal channel of the oil seal is increased, and the difficulty of impurities entering the oil seal is increased.
Further, the lower knuckle seal lip is arranged obliquely axially outward.
The beneficial effect of adopting the further scheme is that: the inclination direction of the lower steering knuckle sealing lip is against the direction of external water flow impacting the oil seal, so that part of water flow impact force can be resisted, and impurities are prevented from entering the oil seal along with water flow impact.
Further, the middle sealing lip is arranged in an inclined mode inwards along the axial direction.
The beneficial effect of adopting the further scheme is that: increasing the difficulty of external impurities passing through the oil seal.
Further, still include the third sealing washer, the third sealing washer cover in first sealing washer with between the second sealing washer, the third sealing washer is including fixed connection's main seal lip, interior sealing ring and inner support ring in proper order, the inner support ring with main seal lip respectively with go up the knuckle sealing ring with pivot sealing ring sealing connection.
The beneficial effect of adopting the further scheme is that: the third sealing ring supports the first sealing ring and the second sealing ring, so that the first sealing ring and the second sealing ring are respectively attached to the upper steering knuckle and the rotating shaft, the main sealing lip seals an internal channel of the oil seal, and impurities are prevented from penetrating through the oil seal to enter the upper steering knuckle.
Further, one end of the inner sealing ring is provided with at least one inner sealing lip which is in sealing fit with the middle sealing ring.
The beneficial effect of adopting the further scheme is that: and the impurities entering the oil seal are prevented from moving continuously.
The pre-tightening ring is fixedly sleeved on the outer side of the main sealing lip, and the distance between the pre-tightening ring and the rotating shaft sealing ring is smaller than the thickness of the main sealing lip.
The beneficial effect of adopting the further scheme is that: the pre-tightening ring enables the main sealing lip to be tightly attached to the rotating shaft sealing ring, and the sealing degree of the main sealing lip is guaranteed.
Further, the inner support ring has a radially extending portion extending radially outward, the radially extending portion abutting an end of the upper knuckle seal ring.
The beneficial effect of adopting the further scheme is that: the radial extension part realizes the installation limit of the oil seal and is simple and convenient to install.
Further, the first sealing ring, the second sealing ring and the third sealing ring are all made of a metal structural plate and an injection molding layer which is injected on the structural plate.
The beneficial effect of adopting the further scheme is that: the structural slab of metal material intensity is high, plays the supporting role, and the layer of moulding plastics can take place elastic deformation to with adjacent structure sealing cooperation.
Furthermore, the two lower steering knuckle sealing lips are annular and arranged at intervals along the radial direction of the first sealing ring; the middle sealing lips are annular and are two, and the middle sealing lips are arranged along the radial interval of the second sealing ring.
The utility model also provides a steering axle, lower knuckle is fixed in the middle part of pivot, goes up the rotatable cover of knuckle and is in the outside of pivot tip still includes an oil blanket suitable for paddy field operating mode, the oil blanket is installed the pivot with go up between the knuckle, go up the knuckle sealing ring with go up the hole interference fit of knuckle, the pivot sealing ring with pivot interference fit, the knuckle seal lip down with knuckle seal fit down.
Drawings
FIG. 1 is a schematic view of the installation structure of the oil seal suitable for the paddy field working condition of the utility model;
FIG. 2 is an enlarged view of the oil seal suitable for the paddy field working condition of the present invention; the grid hatching in fig. 2 indicates the injection molded layer, the diagonal hatching indicates the structural panel, and the injection molded layer depicted in fig. 2 is a structure before elastic deformation, so that there is an overlap of partial structures;
fig. 3 is a cross-sectional view of a third seal ring of the present invention;
fig. 4 is a cross-sectional view of a second seal ring of the present invention;
fig. 5 is a cross-sectional view of the first seal ring of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1. a second intermediate seal lip; 2. an upper knuckle; 3. a first seal ring; 301. an upper knuckle seal ring; 302. a lower knuckle seal ring; 303. a first axial extension; 4. a first inner sealing lip; 5. a third seal ring; 501. an inner seal ring; 502. an inner support ring; 503. a radial extension; 6. a second inner sealing lip; 7. a second seal ring; 701. a rotating shaft sealing ring; 702. an intermediate seal ring; 703. a second axial extension; 8. a primary seal lip; 9. a first intermediate seal lip; 10. a rotating shaft; 11. a second lower knuckle seal lip; 12. a first lower knuckle seal lip; 13. a lower knuckle; 14. and (4) pre-tightening the ring.
Detailed Description
The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.
As shown in fig. 1 to 5, the present embodiment provides an oil seal suitable for use in paddy field conditions, including:
the first sealing ring 3 is provided with an upper steering knuckle sealing ring 301 and a lower steering knuckle sealing ring 302 which are fixedly connected, the upper steering knuckle sealing ring 301 is used for being in interference fit with an inner hole of the upper steering knuckle 2, and one end of the lower steering knuckle sealing ring 302 is provided with at least one lower steering knuckle sealing lip which is in sealing fit with the lower steering knuckle 13;
The upper steering knuckle 2 and the lower steering knuckle 13 are partially or completely soaked in a liquid environment, impurities are filled in the liquid, and the impurities are prevented from entering the upper steering knuckle 2 and the lower steering knuckle 13 through oil seals. The upper knuckle seal ring 301 prevents impurities from entering between the upper knuckle seal ring 301 and the upper knuckle 2, and the spindle seal ring 701 prevents impurities from entering between the spindle seal ring 701 and the spindle 10. Inside the knuckle 2 should get into to impurity, need pass through knuckle seal lip and middle seal lip down in proper order, from this, multichannel seal lip can stop impurity outside the oil blanket, perhaps completely cuts off between the multichannel seal lip of oil blanket, avoids impurity to get into inside knuckle 2. Prolonged paddy field bridge oil blanket life, reduced the frequency of a series of troubles that the paddy field bridge brought because of the oil blanket oil leak, if: oil seal leakage, steering knuckle shell abrasion and the like, improve the quality of the paddy field bridge and reduce the market service cost.
The number of the lower knuckle sealing lips may be one, two, three or more than four, the lower knuckle sealing lips are annular, and when the number of the lower knuckle sealing lips is at least two, at least two lower knuckle sealing lips are arranged along the radial direction of the lower knuckle sealing ring 302 at intervals. In one particular embodiment, as shown in fig. 1 and 2, a lower knuckle seal lip is provided at the lower end of the lower knuckle seal ring 302.
The cross-sectional shape of the lower steering knuckle sealing lip may be a polygon, such as a rectangle as shown in fig. 5, and the polygon may also be a triangle, a pentagon, etc., or may also be a circle, a semicircle, an ellipse, etc.
Preferably, as shown in fig. 5, the outer wall of the upper steering knuckle sealing ring 301 which is in interference fit with the upper steering knuckle 2 is provided with a non-slip protrusion.
The number of the middle sealing lips may be one, two, three or more than four, the middle sealing lips are annular, and when the number of the middle sealing lips is at least two, the at least two middle sealing lips are arranged along the radial direction of the middle sealing ring 702 at intervals. In one particular embodiment, as shown in fig. 1 and 2, a middle seal lip is provided at the lower end of the middle seal ring 702.
The cross-sectional shape of the lower steering knuckle sealing lip may be a polygon, such as a rectangle as shown in fig. 4, and the polygon may also be a triangle, a pentagon, etc., or may also be a circle, a semicircle, an ellipse, etc.
Preferably, as shown in fig. 4, the inner wall of the sealing ring 701 for the rotation shaft which is in interference fit with the rotation shaft 10 has an anti-slip protrusion.
In any of the above embodiments, the inner side of the other end of the lower knuckle seal ring 302 has a first axial extension 303 extending toward the middle seal ring 702, the inner side of one end of the middle seal ring 702 has a second axial extension 703 extending toward the lower knuckle seal ring 302, and the first axial extension 303 is fitted around the outer side of the second axial extension 703.
First axial extension 303 and second axial extension 703 increase the complexity of the internal passage of the oil seal, increasing the difficulty of impurities entering the oil seal.
On the basis of any one of the above schemes, the lower steering knuckle sealing lip is obliquely arranged outwards along the axial direction.
The lower steering knuckle sealing lip is annular, and the inclination direction of the lower steering knuckle sealing lip is against the direction of external water flow impact oil seal, so that part of water flow impact force can be resisted, and impurities are prevented from entering the oil seal along with water flow impact.
On the basis of any one of the above solutions, the middle sealing lip is arranged along the axial direction and inwards in an inclined mode. Thereby increasing the difficulty of external impurities passing through the oil seal.
On the basis of any one of the above schemes, the steering knuckle sealing ring further comprises a third sealing ring 5, the third sealing ring 5 is sleeved between the first sealing ring 3 and the second sealing ring 7, the third sealing ring 5 comprises a main sealing lip 8, an inner sealing ring 501 and an inner supporting ring 502 which are fixedly connected in sequence, and the inner supporting ring 502 and the main sealing lip 8 are respectively in sealing connection with the upper steering knuckle sealing ring 301 and the rotating shaft sealing ring 701.
The third sealing ring 5 supports the first sealing ring 3 and the second sealing ring 7, so that the first sealing ring and the second sealing ring are respectively attached to the upper steering knuckle 2 and the rotating shaft 10, the main sealing lip 8 seals an inner channel of an oil seal, and impurities are prevented from penetrating through the oil seal to enter the upper steering knuckle 2.
Preferably, as shown in fig. 3, the outer wall of the inner support ring 502, which is in sealing connection with the upper knuckle sealing ring 301, has a non-slip protrusion.
Specifically, the main seal lip 8 has a larger cross-sectional area without being elastically deformed than the lower knuckle seal lip and the intermediate seal lip.
On the basis of any of the above solutions, one end of the inner sealing ring 501 has at least one inner sealing lip which is in sealing fit with the middle sealing ring 702.
The inner sealing lip blocks impurities entering the oil seal from moving continuously.
The number of the inner sealing lips may be one, two, three or more, the inner sealing lips are annular, and when the number of the inner sealing lips is at least two, the at least two inner sealing lips are arranged at intervals along the radial direction of the inner sealing ring 501. In one particular embodiment, as shown in fig. 1 and 2, an inner seal lip is provided at the lower end of inner seal ring 501.
The cross-sectional shape of the inner seal lip may be polygonal, for example, rectangular as shown in fig. 3, and the polygonal shape may also be triangular, pentagonal, etc., or may also be circular, semicircular, elliptical, etc.
On the basis of any scheme, the sealing device further comprises a pre-tightening ring 14, wherein the pre-tightening ring 14 is fixedly sleeved on the outer side of the main sealing lip 8, and the distance between the pre-tightening ring 14 and the rotating shaft sealing ring 701 is smaller than the thickness of the main sealing lip 8.
On the basis of either of the above solutions, the inner support ring 502 has a radially outwardly extending radial extension 503, the radial extension 503 being sandwiched between the stepped boss and the end of the upper knuckle seal ring 301.
Specifically, the inner hole of the upper steering knuckle 2 is provided with a stepped boss, and the stepped boss and the radial extension part 503 realize axial installation limit of the oil seal, so that the installation is simple and convenient.
On the basis of any one of the above schemes, the first seal ring 3, the second seal ring 7 and the third seal ring 5 are all made of a metal structural plate and an injection molding layer injected on the structural plate.
The structural slab of metal material intensity is high, plays the supporting role, and the layer of moulding plastics can take place elastic deformation to with adjacent structure sealing cooperation.
The injection molding material is heated and poured on the structural plate, and the injection molding layer is shaped through a mold and is attached to the structural plate after being cooled. As shown in fig. 1-5, the injection molded layer may be on only one side of the structural panel; alternatively, the injection molded layer completely encases the structural panel within its interior. The first sealing ring 3, the second sealing ring 7 and the third sealing ring 5 are pressed together in an interference fit mode and are installed between the upper steering knuckle 2 and the rotating shaft 10, and lubricating media are filled among the first sealing ring 3, the second sealing ring 7 and the third sealing ring 5.
Specifically, as shown in fig. 5, the cross section of the structural plate of the first seal ring 3 is a letter J, the injection layer forms the lower knuckle seal lip and the first axial extension 303, and the structural plate forms a support structure of the upper knuckle seal ring 301, the lower knuckle seal ring 302 and the first axial extension 303.
Specifically, as shown in fig. 4, the cross section of the structural plate of the second seal ring 7 is L-shaped, the injection layer forms the intermediate seal lip and the second axial extension 703, and the structural plate forms the support structure of the rotating shaft seal ring 701 and the intermediate seal ring 702.
Specifically, as shown in fig. 3, the cross section of the structural plate of the third seal ring 5 is a letter Z shape, the injection molded layer forms the main seal lip 8 and the inner seal ring 501, and the structural plate forms the support structure of the inner seal ring 501, the inner support ring 502 and the radial extension 503.
On the basis of any scheme, the two lower steering knuckle sealing lips are annular and are arranged at intervals along the radial direction of the first sealing ring 3; the middle sealing lips are annular and are two, and the middle sealing lips are arranged along the radial direction of the second sealing ring 7 at intervals.
On the basis of any scheme, the two inner sealing lips are annular and arranged at intervals along the radial direction of the inner sealing ring 501.
More specifically, the two lower knuckle seal lips are respectively referred to as a first lower knuckle seal lip 12 and a second lower knuckle seal lip 11; the two middle sealing lips are respectively called a first middle sealing lip 9 and a second middle sealing lip 1; the two inner sealing lips are respectively referred to as a first inner sealing lip 4 and a second inner sealing lip 6. As shown in fig. 1 and 2, if impurities enter the oil seal, the impurities need to sequentially pass through a first lower knuckle seal lip 12, a second lower knuckle seal lip 11, a gap between the first axial extension 303 and the second axial extension 703, a first middle seal lip 9, a second middle seal lip 1, a first inner seal lip 4, a second inner seal lip 6 and a main seal lip 8, so that the impurities are difficult to enter the inside of the paddy field bridge, and the reliability of the oil seal is high.
This embodiment still provides a steering axle, and lower knuckle 13 is fixed in the middle part of pivot 10, goes up the rotatable cover of knuckle 2 the outside of 10 tip of pivot still includes an oil blanket suitable for paddy field operating mode, the oil blanket is installed pivot 10 with go up between the knuckle 2, go up knuckle sealing ring 301 with go up the hole interference fit of knuckle 2, pivot sealing ring 701 with 10 interference fit of pivot, down the knuckle seal lip with knuckle 13 seal fit down.
In one specific embodiment, the upper steering knuckle 2 is fixed relative to the paddy field bridge, the rotating shaft 10 can rotate around the axis of the rotating shaft, and the upper steering knuckle 2 and the rotating shaft 10 are connected through a bearing.
In the present invention, the oil seal is of an annular structure, and fig. 1 shows only the figure on one side of the axis of the oil seal. The terms "inner" and "outer" refer to the side closer to the axis of the oil seal and the side away from the axis of the oil seal, respectively. The terms "one end" and "the other end" refer to one end and the other end of the oil seal in the axial direction, respectively. In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "axial", "radial", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (10)
1. An oil blanket suitable for paddy field operating mode, its characterized in that includes:
the first sealing ring (3), the first sealing ring (3) is provided with an upper steering knuckle sealing ring (301) and a lower steering knuckle sealing ring (302) which are fixedly connected, the upper steering knuckle sealing ring (301) is used for being in interference fit with an inner hole of the upper steering knuckle (2), and one end of the lower steering knuckle sealing ring (302) is provided with at least one lower steering knuckle sealing lip which is in sealing fit with the lower steering knuckle (13);
second sealing washer (7), second sealing washer (7) have fixed connection's pivot sealing ring (701) and middle sealing ring (702), pivot sealing ring (701) are used for with pivot (10) interference fit, middle sealing ring (702) are located the other end of knuckle sealing ring (302) down, just the one end of middle sealing ring (702) have at least one with knuckle sealing ring (302) seal fit's middle seal lip down.
2. The oil seal applicable to paddy field conditions is characterized in that the inner side of the other end of the lower knuckle sealing ring (302) is provided with a first axial extension (303) extending towards the middle sealing ring (702), the inner side of one end of the middle sealing ring (702) is provided with a second axial extension (703) extending towards the lower knuckle sealing ring (302), and the first axial extension (303) is sleeved on the outer side of the second axial extension (703).
3. An oil seal suitable for paddy field conditions, according to claim 1, wherein said lower knuckle seal lip is inclined axially outwardly.
4. An oil seal suitable for use in paddy field conditions, according to claim 1, wherein said intermediate seal lip is inclined axially inwardly.
5. The oil seal suitable for the paddy field working condition is characterized by further comprising a third sealing ring (5), wherein the third sealing ring (5) is sleeved between the first sealing ring (3) and the second sealing ring (7), the third sealing ring (5) comprises a main sealing lip (8), an inner sealing ring (501) and an inner supporting ring (502) which are fixedly connected in sequence, and the inner supporting ring (502) and the main sealing lip (8) are respectively in sealing connection with the upper steering knuckle sealing ring (301) and the rotating shaft sealing ring (701); one end of the inner sealing ring (501) is provided with at least one inner sealing lip which is matched with the middle sealing ring (702) in a sealing way.
6. The oil seal suitable for the paddy field working condition is characterized by further comprising a pre-tightening ring (14), wherein the pre-tightening ring (14) is fixedly sleeved on the outer side of the main sealing lip (8), and the distance between the pre-tightening ring (14) and the rotating shaft sealing ring (701) is smaller than the thickness of the main sealing lip (8).
7. An oil seal adapted for use in paddy field conditions, according to claim 5, characterized in that the inner support ring (502) has a radially outwardly extending radial extension (503), the radial extension (503) abutting the end of the upper knuckle seal ring (301).
8. The oil seal suitable for paddy field working condition according to claim 5, characterized in that, the first seal ring (3), the second seal ring (7) and the third seal ring (5) are made of metal structural plate and injection layer injected on the structural plate.
9. The oil seal suitable for paddy field working conditions is characterized in that the lower steering knuckle sealing lips are annular and provided with two, and the two lower steering knuckle sealing lips are arranged at intervals along the radial direction of the first sealing ring (3); the middle sealing lips are annular and are two, and the middle sealing lips are arranged along the radial direction of the second sealing ring (7) at intervals.
10. A steering axle, lower knuckle (13) are fixed in the middle part of pivot (10), go up the rotatable cover of knuckle (2) in the outside of pivot (10) tip, characterized in that, still include according to any one of claims 1-9 an oil blanket suitable for paddy field operating mode, the oil blanket is installed pivot (10) with go up between knuckle (2), go up knuckle sealing ring (301) with the hole interference fit of going up knuckle (2), pivot sealing ring (701) with pivot (10) interference fit, lower knuckle seal lip with knuckle (13) sealing fit down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220545917.XU CN217081412U (en) | 2022-03-14 | 2022-03-14 | Oil seal and steering axle suitable for paddy field working condition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220545917.XU CN217081412U (en) | 2022-03-14 | 2022-03-14 | Oil seal and steering axle suitable for paddy field working condition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217081412U true CN217081412U (en) | 2022-07-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220545917.XU Active CN217081412U (en) | 2022-03-14 | 2022-03-14 | Oil seal and steering axle suitable for paddy field working condition |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217081412U (en) |
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2022
- 2022-03-14 CN CN202220545917.XU patent/CN217081412U/en active Active
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Address after: 261206 No. 192 South Beihai Road, Fangzi District, Shandong, Weifang Patentee after: Weichai Lovol Intelligent Agricultural Technology Co.,Ltd. Address before: 261206 No. 192 South Beihai Road, Fangzi District, Shandong, Weifang Patentee before: Weichai leiwo Heavy Industry Co.,Ltd. |